kaolin

ka·o·lin

also ka·o·line K0013000 (kā′ə-lĭn)n. A fine clay used in ceramics and refractories, as a filler or coating for paper and textiles, as an additive in food and toothpaste, and as an antidiarrheal drug.

[French, from Mandarin Gāolíng, a mountain of Jiangxi province.]

kaolin

(ˈkeɪəlɪn) or

kaoline

n (Minerals) a fine white clay used for the manufacture of hard-paste porcelain and bone china and in medicine as a poultice and gastrointestinal absorbent. Also called: china clay [C18: from French, from Chinese Kaoling Chinese mountain where supplies for Europe were first obtained, from kao high + ling hill] ˌkaoˈlinic adj

ka•o•lin

or ka•o•line

(ˈkeɪ ə lɪn)

n. a fine white clay used in the manufacture of porcelain. [1720–30; < French < Chinese Gāolǐng mountain in Jiangxi province] ka`o•lin′ic, adj.

ka·o·lin

(kā′ə-lĭn) A soft, fine, whitish sedimentary rock made of clay minerals, especially kaolinite. Kaolin forms from the weathering of other rocks that are rich in aluminum.

Thesaurus

Noun

kaolin - a fine usually white clay formed by the weathering of aluminous minerals (as feldspar); used in ceramics and as an absorbent and as a filler (e.g., in paper)china clay, china stone, kaoline, porcelain clay, terra albaKaopectate - trade name for a fixed-combination antidiarrheal drug that use kaolin as the adsorbent and pectin as the emollientart paper - a high-quality paper (usually having a filler of china clay)clay - a very fine-grained soil that is plastic when moist but hard when fired

Translations

caolíncaolino

kaolin

(kā`əlĭn): see china claychina clay,
one of the purest of the clays, composed chiefly of the mineral kaolinite usually formed when granite is changed by hydrothermal metamorphism. Usage of the terms china clay and kaolin
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Kaolin

(from Kaoling, the name of the area in China, in Kiangsi Province, where it was first found), a rock consisting basically of the mineral kaolinite, commonly with admixtures of quartz granules, feldspar, micas, and, in small quantities, other mineral impurities.

Kaolins are formed through the weathering of various magmatic, feldspathic rocks (primarily low-ferriferous granites; more rarely, argillaceous sediments or arkoses called primary kaolins). They are also formed through the rewashing of these rocks, the kaolins then being redeposited in sedimentary (chiefly sandy) strata (secondary kaolins, or kaolin clays). In primary kaolins the structure of the mother rock is usually clearly visible.

Kaolin deposits are encountered rather frequently. The rock is mined in England (Cornwall), the German Democratic Republic (near Dresden), Czechoslovakia (around Karlovy Vary), and the USA (Georgia). In the USSR, kaolin is mined in the Ukrainian SSR, the Urals, and the Kazakh SSR.

Primary and secondary kaolins are used in an unprocessed form for manufacturing refractory materials. However, in the majority of cases, it is enriched at plants usually located not far from the deposits. According to industrial requirements, the enriched kaolin should contain no more than 0. 3–1. 0 percent iron oxide and titanium oxide (depending upon the grade) and should be free of sand and other impurities, particularly of those that are soluble in water and weak acids. A number of types of production require powdered kaolin of a high degree of whiteness. The most important user of kaolin is the paper industry, which consumes around 40–50 percent of the total output; the kaolin is used to chalk the paper surface and as a filler. In many grades of paper, kaolin makes up as much as 30–40 percent of the total bulk of the paper and, to a significant degree, determines the paper’s quality. In ceramics, kaolin is used in porcelain and earthenware (5–10 percent of the total kaolin output), of which it is a basic component. Around 20 percent of the kaolin mined is used in the rubber industry. In addition, kaolin is used in perfumery, medicine (called “china clay”), and the chemical industry (for making aluminum sulfate).

REFERENCE

Kurs mestorozhdcnii nemetallicheskikh poleznykh iskopaemykh. Edited by P. M. Tatarinov. Moscow, 1969.

V. P. PETROV

kaolin

[′kā·ə·lən] (mineralogy) Any of a group of clay minerals, including kaolinite, nacrite, dickite, and anauxite, with a two-layer crystal in which silicon-oxygen and aluminum-hydroxyl sheets alternate; approximate composition is Al₂O₃·2SiO₂·2H₂O. (petrology) A soft, nonplastic white rock composed principally of kaolin minerals. Also known as bolus alba; white clay.

kaolin

A mineral, usually white, composed principally of hydrous aluminum silicate, of low iron content; used in the manufacture of white cement.

kaolin

, kaoline a fine white clay used for the manufacture of hard-paste porcelain and bone china and in medicine as a poultice and gastrointestinal absorbent

kaolin

[ka´o-lin] native hydrated aluminum silicate, powdered and freed from gritty particles by elutriation; used as an adsorbent and, often with pectin, an antidiarrheal.

ka·o·lin

(kā'ō-lin), Hydrated aluminum silicate; when powdered and freed from gritty particles by elution, kaolin is used as a demulcent and adsorbent. In dentistry, used to add toughness and opacity to porcelain teeth. Synonym(s): aluminum silicate [Ch. kao lin, High Ridge, name of a locality in China where the substance is found in abundance]

kaolin

also

kaoline

(kā′ə-lĭn)n. A fine clay used in ceramics and refractories, as a filler or coating for paper and textiles, as an additive in food and toothpaste, and as an antidiarrheal drug.

kaolin

A fine clay powder used as a suspension in the treatment of DIARRHOEA and sometimes as a thick paste POULTICE to apply local heat. The term is derived from the name of the Chinese province where it was first obtained.

ka·o·lin

(kā'ō-lin) Hydrated aluminum silicate; when powdered and freed from gritty particles by elution, used as a demulcent and adsorbent. In dentistry, used to add toughness and opacity to porcelain teeth.

kaolin

ka·o·lin

kaolin

kaoline

ka•o•lin

or ka•o•line

ka·o·lin

kaolin

kaolin

Kaolin

REFERENCE

kaolin

kaolin

kaolin

kaolin

kaolin

ka·o·lin

kaolin

kaoline

kaolin

ka·o·lin

kaolin

Synonyms for kaolin

noun a fine usually white clay formed by the weathering of aluminous minerals (as feldspar)

Synonyms

Related Words